/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: calc(100vh - 80px);
  padding: var(--spacing-64) 0 var(--spacing-64);
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-32);
  max-width: 880px;
  margin: 0 auto;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  padding: 6px var(--spacing-16);
  border: 1px solid var(--color-faded-steel);
  border-radius: var(--radius-buttons);
  background: rgba(12, 12, 11, 0.6);
  font-family: var(--font-geistmono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking-caption);
  color: var(--color-muted-ash);
  text-transform: uppercase;
}

.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-electric-blue);
  box-shadow: 0 0 12px var(--color-electric-blue);
}

.hero-title {
  font-size: clamp(64px, 9.5vw, 128px);
  line-height: 1.3;
  letter-spacing: -0.035em;
  color: var(--color-frost-white);
  font-weight: 700;
  text-shadow:
    0 0 40px rgba(37, 99, 235, 0.25),
    0 2px 24px rgba(0, 0, 0, 0.4);
}

.hero-title .stack-words {
  display: inline-grid;
  grid-template-columns: 1fr;
  vertical-align: baseline;
  padding-bottom: 0.15em;
  overflow: visible;
}

.hero-title .stack-word {
  grid-column: 1;
  grid-row: 1;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 400ms ease, transform 400ms ease;
  font-family: 'Noto Serif', Georgia, 'Times New Roman', serif;
  font-style: italic;
  font-weight: 700;
  color: var(--color-frost-white);
  background: linear-gradient(180deg, #ffffff 0%, #9ab3ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title .stack-word.active {
  opacity: 1;
  transform: translateY(0);
}

.hero-subtitle {
  font-size: var(--text-subheading);
  line-height: var(--leading-subheading);
  letter-spacing: var(--tracking-subheading);
  color: var(--color-muted-ash);
  max-width: 640px;
}

.hero-form {
  width: 100%;
  max-width: 520px;
  margin-top: calc(-1 * var(--spacing-16));
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-form .btn-filled {
  padding: var(--spacing-16) var(--spacing-40);
  min-width: 240px;
  font-size: var(--text-body);
}

.hero-form .form-hint {
  margin-top: var(--spacing-12);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking-caption);
  color: var(--color-muted-ash);
  font-family: var(--font-geistmono);
  text-transform: uppercase;
}

.hero-secondary-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-24);
  margin-top: var(--spacing-16);
  flex-wrap: wrap;
  justify-content: center;
}

/* ===== Hero glow + geometric wireframes ===== */
.hero-glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-glow::before,
.hero-glow::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  will-change: transform;
}

.hero-glow::before {
  top: -10%;
  left: 50%;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.42) 0%, rgba(37, 99, 235, 0) 60%);
  transform: translate(-50%, 0);
  animation: glow-drift-a 28s ease-in-out infinite alternate;
}

.hero-glow::after {
  bottom: -20%;
  right: 5%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(157, 78, 221, 0.28) 0%, rgba(157, 78, 221, 0) 60%);
  animation: glow-drift-b 36s ease-in-out infinite alternate;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 0%, rgba(0, 0, 0, 0.6) 45%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 0%, rgba(0, 0, 0, 0.6) 45%, transparent 78%);
}

/* Sharp grid lines */
.hero-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(120, 168, 255, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 168, 255, 0.10) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* Soft glow halo behind the sharp grid */
.hero-grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.35) 1px, transparent 1px);
  background-size: 64px 64px;
  filter: blur(6px);
  opacity: 0.7;
  animation: grid-pulse 6s ease-in-out infinite;
}

@keyframes grid-pulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 0.85; }
}

@keyframes glow-drift-a {
  0% { transform: translate(-52%, -2%) scale(1); }
  100% { transform: translate(-48%, 4%) scale(1.08); }
}

@keyframes glow-drift-b {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-6%, -4%) scale(1.1); }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero {
    padding: var(--spacing-64) 0 var(--spacing-48);
    min-height: auto;
  }

  .hero-glow::before {
    width: 520px;
    height: 520px;
  }

  .hero-glow::after {
    width: 360px;
    height: 360px;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-48) 0 var(--spacing-40);
  }

  .hero-subtitle {
    font-size: var(--text-body);
    line-height: var(--leading-body);
  }

  .hero-secondary-actions {
    gap: var(--spacing-16);
  }
}